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+/*!
+
+\page taper_page Taper
+
+\n \b Taper mesh quality criterion represents the ratio of the areas
+of two triangles separated by a diagonal. So it can be calculated only
+for elements consisting of 4 nodes.
+
+\image html image25.gif
+
+<br><em>To apply the Taper quality criterion to your mesh:</em>
+
+<ol>
+<li>Display your mesh in the viewer.</li>
+
+<li>Choose <b>Controls > Taper</b> or click <em>"Taper"</em> button in
+the toolbar.
+
+\image html image36.gif
+<center><em>"Taper" button</em></center>
+
+Your mesh will be displayed in the viewer with its elements colored
+according to the applied mesh quality control criterion:
+
+\image html image90.jpg
+</li>
+</ol>
+
+<br><b>See Also</b> a sample TUI Script of a
+\ref tui_taper "Taper quality control" operation.
+
+*/
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